package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.mapper.SystemUserMapper;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.atguigu.lease.web.admin.vo.system.user.SystemUserInfoVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import io.netty.util.internal.StringUtil;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.awt.*;
import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @Autowired
    private SystemUserMapper systemUserMapper;

    /**
     * 获取图形验证码
     *
     * @return
     */
    @Override
    public CaptchaVo getCaptcha() {
        SpecCaptcha captcha = new SpecCaptcha(130, 48, 5);
        captcha.setCharType(Captcha.TYPE_DEFAULT);
        String code = captcha.text().toLowerCase();
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();
        String image = captcha.toBase64();
        stringRedisTemplate.opsForValue().set(key, code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        return new CaptchaVo(image, key);
    }

    /**
     * 登录
     *
     * @param loginVo
     * @return
     */
    @Override
    public String login(LoginVo loginVo) {
        //从redis获取code
        String code = stringRedisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        // 校验是否输入验证码
        if (!StringUtils.hasText(loginVo.getCaptchaCode())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        // 校验验证码是否过期，从redis取
        if (code==null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        // 校验验证码是否正确
        if (!code.equals(loginVo.getCaptchaCode())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        SystemUser systemUser = systemUserMapper.selectOneByUserName(loginVo.getUsername());
        // 校验账户是否存在
        if (systemUser == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        // 校验账户是否封禁
        if (systemUser.getStatus()== BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        // 校验密码是否正确
        if (!DigestUtils.md5Hex(loginVo.getPassword()).equals(systemUser.getPassword())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        // 创建并返回token
        return JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());
    }

    /**
     * 根据用户id获取用户信息
     *
     * @param userId
     * @return
     */
    @Override
    public SystemUserInfoVo selectUserInfoByUserId(Long userId) {
        SystemUser systemUser = systemUserMapper.selectById(userId);
        SystemUserInfoVo userInfoVo = new SystemUserInfoVo();
        if (systemUser!=null){
            userInfoVo.setAvatarUrl(systemUser.getAvatarUrl());
            userInfoVo.setName(systemUser.getName());
        }
        return userInfoVo;
    }
}
